Starting with O

1. Obey
Word Type: Verb
Pronunciation: uh-BAY
Meaning: To follow rules or commands
Synonyms: Follow, Comply
Sentences:
• Children should obey their parents.
• Soldiers must obey their commander.

2. Object
Word Type: Noun / Verb
Pronunciation: OB-jekt / uh-BJEKT
Meaning: A thing / To oppose
Synonyms: Thing, Item / Protest
Sentences:
• She picked up a shiny object.
• I object to his rude behavior.

3. Observe
Word Type: Verb
Pronunciation: ub-ZURV
Meaning: To watch carefully
Synonyms: Notice, Watch
Sentences:
• The scientist observed the experiment closely.
• We must observe nature to learn from it.

4. Obtain
Word Type: Verb
Pronunciation: ub-TAYN
Meaning: To get or acquire
Synonyms: Gain, Receive
Sentences:
• You must work hard to obtain success.
• I obtained the report yesterday.

5. Occupy
Word Type: Verb
Pronunciation: OK-yuh-pai
Meaning: To take up space or time
Synonyms: Fill, Engage
Sentences:
• The meeting will occupy two hours.
• The soldiers occupied the building.

6. Occur
Word Type: Verb
Pronunciation: uh-KUR
Meaning: To happen or take place
Synonyms: Happen, Arise
Sentences:
• An accident occurred on the road.
• It never occurred to me before.

7. Offer
Word Type: Verb / Noun
Pronunciation: AW-fur
Meaning: To present something
Synonyms: Present, Propose
Sentences:
• He offered me a cup of tea.
• The shop has a great discount offer.

8. Open
Word Type: Verb / Adjective
Pronunciation: OH-puhn
Meaning: To make accessible
Synonyms: Uncover, Start
Sentences:
• Please open the window.
• The shop opens at 9 a.m.

9. Operate
Word Type: Verb
Pronunciation: OP-uh-rayt
Meaning: To function or control
Synonyms: Run, Manage
Sentences:
• The doctor operated on the patient.
• This machine operates automatically.

10. Oppose
Word Type: Verb
Pronunciation: uh-POHZ
Meaning: To resist or disagree
Synonyms: Resist, Confront
Sentences:
• Many people opposed the new law.
• I strongly oppose unfair treatment.

11. Organize
Word Type: Verb
Pronunciation: OR-guh-nize
Meaning: To arrange systematically
Synonyms: Arrange, Manage
Sentences:
• She organized the party beautifully.
• We must organize our work properly.

12. Originate
Word Type: Verb
Pronunciation: uh-RIJ-uh-nayt
Meaning: To begin or arise from
Synonyms: Start, Emerge
Sentences:
• The idea originated from him.
• Many traditions originated in ancient India.

13. Overcome
Word Type: Verb
Pronunciation: OH-vur-kum
Meaning: To succeed in dealing with a problem
Synonyms: Conquer, Defeat
Sentences:
• He overcame his fear of failure.
• You must overcome all difficulties.

14. Own
Word Type: Verb / Adjective
Pronunciation: Ohn
Meaning: To possess
Synonyms: Possess, Belong
Sentences:
• I own a small house in the city.
• She runs her own business.

15. Outshine
Word Type: Verb
Pronunciation: owt-SHINE
Meaning: To do better than others
Synonyms: Surpass, Excel
Sentences:
• He always tries to outshine his brother.
• Her performance outshone everyone else.

16. Outline
Word Type: Noun / Verb
Pronunciation: OUT-line
Meaning: A summary or border
Synonyms: Sketch, Draft
Sentences:
• Please outline the main points.
• The teacher gave an outline of the chapter.

17. Output
Word Type: Noun
Pronunciation: OUT-poot
Meaning: The result of work or process
Synonyms: Production, Yield
Sentences:
• The factory increased its output.
• His daily output is impressive.

18. Outbreak
Word Type: Noun
Pronunciation: OUT-brayk
Meaning: Sudden start of something harmful
Synonyms: Eruption, Explosion
Sentences:
• There was an outbreak of disease.
• The outbreak caused panic in the city.

19. Outgrow
Word Type: Verb
Pronunciation: out-GROH
Meaning: To grow beyond something
Synonyms: Mature, Surpass
Sentences:
• He outgrew his old clothes.
• You will outgrow childish habits soon.

20. Outnumber
Word Type: Verb
Pronunciation: out-NUM-bur
Meaning: To be more than in number
Synonyms: Exceed, Surpass
Sentences:
• The players outnumbered the coaches.
• Women outnumber men in that office.

21. Outperform
Word Type: Verb
Pronunciation: out-per-FORM
Meaning: To perform better
Synonyms: Excel, Surpass
Sentences:
• Our company outperformed all competitors.
• She outperformed her classmates easily.

22. Outsmart
Word Type: Verb
Pronunciation: out-SMAHRT
Meaning: To be more clever than someone
Synonyms: Outwit, Trick
Sentences:
• The fox outsmarted the hunter.
• She always tries to outsmart others.

23. Outweigh
Word Type: Verb
Pronunciation: out-WAY
Meaning: To be more important than
Synonyms: Surpass, Exceed
Sentences:
• The benefits outweigh the risks.
• Her kindness outweighs her mistakes.

24. Overact
Word Type: Verb
Pronunciation: oh-ver-AKT
Meaning: To act too much or exaggerate
Synonyms: Exaggerate, Overplay
Sentences:
• He tends to overact in emotional scenes.
• The actor was criticized for overacting.

25. Overeat
Word Type: Verb
Pronunciation: oh-ver-EET
Meaning: To eat too much
Synonyms: Binge, Gorge
Sentences:
• You should not overeat at night.
• He felt sick after overeating.

26. Overjoyed
Word Type: Adjective
Pronunciation: oh-ver-JOYD
Meaning: Extremely happy
Synonyms: Delighted, Thrilled
Sentences:
• She was overjoyed at her success.
• I felt overjoyed to see my family.

27. Overlap
Word Type: Verb / Noun
Pronunciation: oh-ver-LAP
Meaning: To cover partly
Synonyms: Cover, Coincide
Sentences:
• Some of our duties overlap.
• The meetings overlapped by an hour.

28. Overload
Word Type: Verb / Noun
Pronunciation: oh-ver-LOHD
Meaning: To put too much load
Synonyms: Burden, Overwork
Sentences:
• Don’t overload the truck.
• He was suffering from work overload.

29. Overlook
Word Type: Verb
Pronunciation: oh-ver-LOOK
Meaning: To miss noticing something
Synonyms: Ignore, Miss
Sentences:
• I overlooked that mistake.
• Don’t overlook small details.

30. Overpower
Word Type: Verb
Pronunciation: oh-ver-POW-er
Meaning: To defeat completely
Synonyms: Defeat, Subdue
Sentences:
• The police overpowered the thief.
• His strength overpowered the opponent.

31. Overreact
Word Type: Verb
Pronunciation: oh-ver-ree-AKT
Meaning: To respond too strongly
Synonyms: Exaggerate, Overdo
Sentences:
• Don’t overreact to small issues.
• She tends to overreact when upset.

32. Oversee
Word Type: Verb
Pronunciation: oh-ver-SEE
Meaning: To supervise
Synonyms: Supervise, Manage
Sentences:
• He oversees the entire project.
• The manager oversees all operations.

33. Overtake
Word Type: Verb
Pronunciation: oh-ver-TAYK
Meaning: To go ahead of someone
Synonyms: Surpass, Pass
Sentences:
• The car overtook the bus quickly.
• Hard work can overtake natural talent.

34. Overthink
Word Type: Verb
Pronunciation: oh-ver-THINK
Meaning: To think too much
Synonyms: Ponder, Worry
Sentences:
• Don’t overthink every situation.
• She often overthinks before decisions.

35. Overthrow
Word Type: Verb
Pronunciation: oh-ver-THROH
Meaning: To remove from power
Synonyms: Defeat, Uproot
Sentences:
• The rebels overthrew the king.
• The government was overthrown.

36. Overturn
Word Type: Verb
Pronunciation: oh-ver-TURN
Meaning: To turn upside down
Synonyms: Upset, Reverse
Sentences:
• The car overturned on the road.
• The court overturned the decision.

37. Overuse
Word Type: Verb
Pronunciation: oh-ver-YOOZ
Meaning: To use too much
Synonyms: Waste, Misuse
Sentences:
• Don’t overuse your phone.
• Overusing plastic harms the environment.

38. Overwhelm
Word Type: Verb
Pronunciation: oh-ver-WELM
Meaning: To overpower emotionally or physically
Synonyms: Crush, Astonish
Sentences:
• She was overwhelmed with emotion.
• The team was overwhelmed by support.

39. Overwork
Word Type: Verb / Noun
Pronunciation: oh-ver-WURK
Meaning: To work too much
Synonyms: Exhaust, Tire
Sentences:
• He is suffering from overwork.
• Don’t overwork yourself.

40. Overwrite
Word Type: Verb
Pronunciation: oh-ver-RITE
Meaning: To replace existing data or text
Synonyms: Replace, Modify
Sentences:
• Don’t overwrite the old file.
• The system may overwrite the data.